How often and how much should a cat eat per day?

Answer 1

Cats will usually self-regulate and eat what they need, so you should just make sure they have food. A cat that gets fat is probably not getting too much food, it's getting the wrong kind of food.

A cat should, when standing, have an outline like a race track when seen from above (straight sides and rounded ends). If it either narrows or widens toward the back end, the cat is too thin or too fat respectively.